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Filename Latest commit message Latest commit date
Ben Dooks c3dc751184 riscv: add as-options for modules with assembly compontents 
commit c1f6eff304e4dfa4558b6a8c6b2d26a91db6c998 upstream.

When trying to load modules built for RISC-V which include assembly files
the kernel loader errors with "unexpected relocation type 'R_RISCV_ALIGN'"
due to R_RISCV_ALIGN relocations being generated by the assembler.

The R_RISCV_ALIGN relocations can be removed at the expense of code space
by adding -mno-relax to gcc and as.  In commit 7a8e7da422
("RISC-V: Fixes to module loading") -mno-relax is added to the build
variable KBUILD_CFLAGS_MODULE. See [1] for more info.

The issue is that when kbuild builds a .S file, it invokes gcc with
the -mno-relax flag, but this is not being passed through to the
assembler. Adding -Wa,-mno-relax to KBUILD_AFLAGS_MODULE ensures that
the assembler is invoked correctly. This may have now been fixed in
gcc[2] and this addition should not stop newer gcc and as from working.

[1] https://github.com/riscv/riscv-elf-psabi-doc/issues/183
[2] 3b0a7d624e

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Link: https://lore.kernel.org/r/20220529152200.609809-1-ben.dooks@codethink.co.uk
Fixes: ab1ef68e54 ("RISC-V: Add sections of PLT and GOT for kernel module")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-29 17:14:08 +02:00
arch riscv: add as-options for modules with assembly compontents 2022-07-29 17:14:08 +02:00
block block: fix bio_clone_blkg_association() to associate with proper blkcg_gq 2022-06-14 18:11:50 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: drbg - make reseeding from get_random_bytes() synchronous 2022-06-22 14:11:18 +02:00
Documentation ipv4: Fix data-races around sysctl_ip_dynaddr. 2022-07-21 20:59:22 +02:00
drivers pinctrl: stm32: fix optional IRQ support to gpios 2022-07-29 17:14:08 +02:00
fs ext4: fix race condition between ext4_write and ext4_convert_inline_data 2022-07-21 20:59:18 +02:00
include raw: Fix a data-race around sysctl_raw_l3mdev_accept. 2022-07-21 20:59:22 +02:00
init random: handle latent entropy and command line from random_init() 2022-06-22 14:11:17 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-14 18:11:41 +02:00
kernel signal handling: don't use BUG_ON() for debugging 2022-07-21 20:59:27 +02:00
lib ida: don't use BUG_ON() for debugging 2022-07-12 16:30:49 +02:00
LICENSES
mm mm/slub: add missing TID updates on slab deactivation 2022-07-12 16:30:46 +02:00
net net: tipc: fix possible refcount leak in tipc_sk_create() 2022-07-21 20:59:25 +02:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-17 09:48:39 +01:00
scripts modpost: fix section mismatch check for exported init/exit sections 2022-06-29 08:58:49 +02:00
security ima: Fix a potential integer overflow in ima_appraise_measurement 2022-07-21 20:59:19 +02:00
sound ASoC: madera: Fix event generation for rate controls 2022-07-21 20:59:26 +02:00
tools selftests: forwarding: fix error message in learning_test 2022-07-12 16:30:49 +02:00
usr
virt KVM: Prevent module exit until all VMs are freed 2022-04-15 14:18:27 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: co-maintain random.c 2022-06-22 14:11:05 +02:00
Makefile Linux 5.4.207 2022-07-21 20:59:29 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.